The Plugs 'N Pixels website includes a Services Directory
for Photographers, Retouchers, Graphic designers, Web designers and Bloggers.
For a one-time, non-recurring payment of $10 you can have a permanent two-piece listing in the Directory (a large graphic ad on the landing page swapped with others on a rotating basis, and a smaller logo+description on the service-specific page).
As the Directory fills up this price will increase, but there's lots of room for growth at this point.
Download the PDF on the Directory page for details.